Home / 265,766.24-398,581.32-78,734

Finding the Fourth Proportional to 265,766.24, 398,581.32 and 78,734

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Solution

The fourth proportional to 265,766.24, 398,581.32 and 78,734 is: 118,080.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,766.24 : 398,581.32 = 78,734 : x
  2. Step 2: Convert to fraction form
    265,766.24/398,581.32 = 78,734/x
  3. Step 3: Cross multiply
    265,766.24x = 398,581.32 × 78,734
  4. Step 4: Simplify right side
    265,766.24x = 31,381,901,648.88
  5. Step 5: Solve for x
    x = 31,381,901,648.88/265,766.24
  6. Step 6: Final answer
    x = 118,080.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.